package com.li.security.filter;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.li.security.entity.SecUser;
import com.li.security.entity.User;
import com.li.security.security.TokenManger;
import com.li.servicebase.exceptionhandler.XhuihuiException;
import com.li.util.R;
import com.li.util.ResponseUtil;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
import org.springframework.security.web.util.matcher.AntPathRequestMatcher;

import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.ArrayList;

public class TokenLoginFilter extends UsernamePasswordAuthenticationFilter {

    private TokenManger tokenManger;
    private RedisTemplate redisTemplate;
    private AuthenticationManager authenticationManager;;

    public TokenLoginFilter(TokenManger tokenManger,RedisTemplate redisTemplate,AuthenticationManager authenticationManager){
        this.tokenManger = tokenManger;
        this.redisTemplate = redisTemplate;
        this.authenticationManager = authenticationManager;
        this.setPostOnly(false);
        this.setRequiresAuthenticationRequestMatcher(new AntPathRequestMatcher("/admin/acl/login","POST"));
    }

    //1 获取表单提交用户名和密码
    @Override
    public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response) throws AuthenticationException{

        //获取表单提交数据
        try {
            User user = new ObjectMapper().readValue(request.getInputStream(), User.class);
            return authenticationManager.authenticate(new UsernamePasswordAuthenticationToken(user.getUsername(),user.getPassword(),new ArrayList<>()));
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }
    //2 认证成功调用的fangf
    @Override
    protected void successfulAuthentication(HttpServletRequest request, HttpServletResponse response, FilterChain chain, Authentication authResult) throws IOException, ServletException {
        //认证成功 得到认证成功之后用户信息
        SecUser user = (SecUser) authResult.getPrincipal();
        //根据用户名生成token
        String token = tokenManger.createToken(user.getCurrentUserInfo().getUsername());
        //把用户名称和用户权限列表放到redis
        redisTemplate.opsForValue().set(user.getCurrentUserInfo().getUsername(),user.getPermissionValueList());
        //返回token
        ResponseUtil.out(response, R.ok().data("token",token));
    }
    //3 认证失败调用的方法
    @Override
    protected void unsuccessfulAuthentication(HttpServletRequest request, HttpServletResponse response, AuthenticationException failed) throws IOException, ServletException {
        ResponseUtil.out(response, R.error());
    }
}
